NEW MATERIALS FOR THE PRODUCTION OF REPLACEABLE PARTS OF TILLAGE AGRICULTURAL MACHINERY

Abstract

The analysis of results of practical application of cast replaceable details of hinged tillage agricultural machinery at operation in a number of the agricultural enterprises of the Poltava region at processing of more than 60 thousand hectares within several years is presented. Comparative data of the resource of parts made of high-strength bainitic cast iron and steel serial analogues of domestic and foreign production are given. The advantages of the method of manufacturing by casting methods in comparison with the traditional method of manufacturing by stamping. This technology allows you to easily make adjustments to the design of the cultivator legs, thus providing a new quality of tillage and pruning of the root system of weeds, which eliminates the need for herbicides. The basis of this technology is the use of composite complex modifiers made by rolling powder mixtures of plastic and brittle components with the necessary observance of the proportions of their ratio. The use of powder rolled modifiers provides the necessary properties and structure of the cast metal required for further heat treatment. It is substantiated to obtain high wear resistance of cast products due to the appearance of TRIP-effect and constant updating of wear-resistant surface layer during operation.